package org.jzy3d.chart.controllers.mouse.selection;

import java.awt.Graphics2D;
import java.util.Deque;
import java.util.List;

import org.jzy3d.maths.ConvexHull;
import org.jzy3d.maths.Coord2d;
import org.jzy3d.maths.Coord3d;
import org.jzy3d.plot3d.primitives.selectable.SelectableSphere;
import org.jzy3d.plot3d.rendering.scene.Scene;
import org.jzy3d.plot3d.rendering.view.View;

public class AWTSphereMouseSelector extends AWTAbstractMouseSelector {
    public AWTSphereMouseSelector(SelectableSphere scatter) {
        this.sphere = scatter;
    }

    /** Make projection and match points belonging to selection. */
    @Override
    protected void processSelection(Scene scene, View view, int width, int height) {
        view.project();
        projection = sphere.getProjection();
        sphere.setHighlighted(false);
        for (Coord3d p : projection)
            if (matchRectangleSelection(in, out, p, width, height)) {
                sphere.setHighlighted(true);
            }
    }

    @Override
    protected void drawSelection(Graphics2D g2d, int width, int height) {
        this.width = width;
        this.height = height;

        if (dragging)
            drawRectangle(g2d, in, out);

        if (projection != null && sphere.isHighlighted()) {
            hull = ConvexHull.build2d(projection);
            Coord2d prev = hull.pop();
            Coord2d next;
            g2d.setColor(java.awt.Color.GREEN);
            while (!hull.isEmpty()) {
                next = hull.pop();
                g2d.drawOval((int) prev.getX() - 4, (int) prev.getY() - 4, 8, 8);
                g2d.drawLine((int) prev.getX(), (int) prev.getY(), (int) next.getX(), (int) next.getY());
                prev = next;
            }
            g2d.setColor(java.awt.Color.BLUE);
            for (Coord3d c1 : projection) {
                g2d.drawOval((int) c1.x - 2, (int) c1.y - 2, 4, 4);
            }
        }
    }

    @Override
    public void clearLastSelection() {
        sphere.setHighlighted(false);
        projection = null;
    }

    protected SelectableSphere sphere;
    protected int width;
    protected int height;
    protected List projection;
    protected Deque hull;
}